CN105978834A - Wireless communication method, equipment and device - Google Patents
Wireless communication method, equipment and device Download PDFInfo
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- CN105978834A CN105978834A CN201610274337.0A CN201610274337A CN105978834A CN 105978834 A CN105978834 A CN 105978834A CN 201610274337 A CN201610274337 A CN 201610274337A CN 105978834 A CN105978834 A CN 105978834A
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- 238000004590 computer program Methods 0.000 claims description 12
- 238000013442 quality metrics Methods 0.000 claims description 5
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03178—Arrangements involving sequence estimation techniques
- H04L25/03184—Details concerning the metric
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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Abstract
A wireless communication method, equipment and a device are provided; Communication in a dominant interference scenario may be supported by performing inter-cell interference coordination (ICIC). Resource coordination/partitioning may be performed to allocate resources to a serving Node B located near the vicinity of a strong interfering Node B. The interfering Node B may avoid transmitting on the allocated/protected resources, possibly except for a common reference signal (CRS). A UE can then communicate with the serving Node B on the protected resources in the presence of the interfering Node B and may observe no interference (possibly except for the CRS) from the interfering Node B. When CRS tones of an interferer may collide with control/data tones of a serving cell, CRS interference cancelation (CRS IC) or puncturing of interfered resource elements (REs) may be appropriate. Certain aspects of the present disclosure provide techniques, where the UE may dynamically switch between CRS IC and RE puncturing based on certain parameters.
Description
Present patent application be international application no be PCT/US2011/054793, international filing date is 2011
In on October 4, in, enter the Application No. 201180048092.5 of National Phase in China, entitled " common
In channel heterogeneous network common reference signal interference cancellation and resource element perforation between switching at runtime " send out
The divisional application of bright patent application..
Technical field
The aspects of the disclosure relates generally to method for wireless communications, equipment and device, particularly relates to use
Dynamically cutting between common reference signal interference cancellation and resource element perforation in common channel heterogeneous network
The technology changed.
Background technology
Cordless communication network be widely deployed to provide such as voice, video, grouped data, information receiving,
The various communication services such as broadcast.These wireless networks can be can by share can Internet resources prop up
Hold the multi-access network of multiple user.The example of this kind of multi-access network include CDMA (CDMA) network,
Time division multiple acess (TDMA) network, frequency division multiple access (FDMA) network, orthogonal FDMA (OFDMA)
Network and Single Carrier Frequency Division Multiple Access (SC-FDMA) network.
Cordless communication network can include supporting several base stations that several subscriber's installation (UE) communicates.UE
Can communicate with base station with up-link via downlink.Downlink (or i.e. forward link) refers to from base
Stand to the communication link of UE, and up-link (or i.e. reverse link) refers to the communication from UE to base station
Link.
Base station can on the uplink to UE transmit data and control information and/or can on uplink from
UE receives data and the information of control.On the uplink, from base station transmission can it is observed that because of from
The transmission of adjacent base station and the interference that causes.On uplink, from UE transmission may to from neighbour
The transmission of other UE of base station communication interferes.Interference may make in downlink and up-link
Performance degradation.
Summary of the invention
One side in the disclosure, it is provided that a kind of method for wireless communications.The method generally comprises:
Identify, between transmission and the transmission of one or more non-serving B node of serving Node B, there is interference
Subframe, wherein those subframes are based on this serving Node B and this one or more non-serving B node
Between collaborative resource divide and identify；Measure the parameter relevant with this interference；And based on recording ginseng
Number determining to bore a hole the resource element (RE) of those subframes and is also carried out common reference signal interference cancellation
(CRS IC) reduces this interference.
One side in the disclosure, it is provided that a kind of equipment for radio communication.This equipment generally comprises:
Have between transmission and the transmission of one or more non-serving B node of serving Node B for mark
The device of subframe of interference, wherein those subframes are based on this serving Node B and this one or more non-clothes
Collaborative resource division between business B node identifies；For measuring the dress of the parameter relevant with this interference
Put；And be used for based on recording parameter determination being to bore a hole the resource element (RE) of those subframes to be also carried out
Common reference signal interference cancellation (CRS IC) reduces the device of this interference.
One side in the disclosure, it is provided that a kind of device for wireless communications.This equipment generally comprises:
At least one processor and coupled to the memorizer of this at least one processor.This at least one processor one
As be configured to: identify in the transmission of serving Node B and the transmission of one or more non-serving B node
Between have a noisy subframe, wherein those subframes are that one or more is non-based on this serving Node B and this
Collaborative resource division between serving Node B identifies；Measure the parameter relevant with this interference；And
It is to bore a hole the resource element (RE) of those subframes to be also carried out common reference signal based on recording parameter determination
Interference cancellation (CRS IC) reduces this interference.
One side in the disclosure, it is provided that a kind of computer program for radio communication.This calculating
Machine program product generally comprises computer-readable medium, and this computer-readable medium has for following action
Code: identify and have between transmission and the transmission of one or more non-serving B node of serving Node B
Noisy subframe, wherein those subframes are based on this serving Node B and this one or more non-serving B
Collaborative resource division between node identifies；Measure the parameter relevant with this interference；And based on survey
Obtaining parameter determination is resource element (RE) perforation of those subframes to be also carried out common reference signal interference disappear
(CRS IC) is gone to reduce this interference.
Accompanying drawing explanation
Fig. 1 be explain orally conceptually according to the disclosure some in terms of the block diagram of example of cordless communication network.
Fig. 2 illustrate explain orally conceptually according to the disclosure some in terms of cordless communication network in B node with
The block diagram of the example that user equipment devices (UE) communicates.
Fig. 3 be explain orally conceptually according to the disclosure some in terms of cordless communication network in frame structure
The block diagram of example.
Fig. 4 explained orally according to the disclosure some in terms of have normal cyclic prefix for downlink
Two kinds of Exemplary frame formats.
Fig. 5 explain orally according to the disclosure some in terms of exemplary strong jamming sight.
Fig. 6 explain orally according to the disclosure some in terms of heterogeneous network in subframe example collaboration formula divide.
Fig. 7 explanation according to the disclosure some in terms of the example system with serving Node B and UE, its
Can be based on the parameter relevant with interference at common reference signal interference cancellation (CRS IC) and resource element
(RE) dynamically switch between perforation.
Fig. 8 explain orally according to the disclosure some in terms of for based on the parameter relevant with interference at CRS IC
And the exemplary operations dynamically switched between RE perforation.
Detailed description of the invention
Communication in surging interference scenario can be supported by performing inter-cell interference coordination (ICIC).
According to some aspect of ICIC, resource coordination/division can be performed, to allocate resources to be positioned at strong jamming B
The serving Node B of near nodal.Interference B node can avoid being distributed/shielded resource on pass
Sending, possible common reference signal (CRS) makes an exception.In the case of there is interference B node, UE is subsequently
Can in shielded resource with serving Node B communication, and would not observe that self-interference B node
Interference (possible CRS exception).When interference source CRS frequency modulation may with the control of non-serving cells/
During data tones conflict, CRS interference cancellation (CRS IC) or be disturbed the perforation of resource element (RE)
It is probably appropriate.Some aspect of the disclosure provides wherein UE can be based on some parameter at CRS IC
And the technology dynamically switched between RE perforation.
All technology described herein can be used for various cordless communication network, such as CDMA, TDMA,
FDMA, OFDMA, SC-FDMA and other networks.Term " network " and " system " are often by interchangeably
Use.Cdma network can realize such as universal terrestrial radio and be electrically accessed (UTRA), cdma2000
Etc. radiotechnics.UTRA includes wideband CDMA (WCDMA), time division synchronous CDMA
And other variants of CDMA (TD-SCDMA).Cdma2000 contains IS-2000, IS-95 and IS-856
Standard.TDMA network can realize the radiotechnics such as such as global system for mobile communications (GSM).
OFDMA network can realize such as evolution UTRA (E-UTRA), Ultra-Mobile Broadband (UMB),
IEEE 802.11(Wi-Fi)、IEEE 802.16(WiMAX)、IEEE 802.20、
Deng radiotechnics.UTRA and E-UTRA is a part of Universal Mobile Telecommunications System (UMTS).
The 3GPP Long Term Evolution (LTE) of FDD (FDD) and time division duplex (TDD) two kinds of forms and
Senior LTE (LTE-A) is the redaction of the use E-UTRA of UMTS, and it is adopted on the uplink
SC-FDMA is used on uplink with OFDMA.UTRA、E-UTRA、UMTS、LTE、
LTE-A and GSM is described in the document of the tissue from entitled " the 3rd generation partnership projects " (3GPP).
Cdma2000 and UMB is in the document of the tissue from entitled " the 3rd generation partnership projects 2 " (3GPP2)
Describe.All technology described herein can be used for above-mentioned wireless network and radiotechnics and other
Wireless network and radiotechnics.For the sake of clarity, certain of these technology is described below for LTE
A little aspects, and use LTE term in following major part describes.
Fig. 1 show can perform wherein described for dynamically cutting between interference cancellation and perforation
The cordless communication network 100 of the code changed.Network 100 can be LTE network or other certain wireless networks.
Wireless network 100 can include several evolved B node (eNB) 110 and other network entities.ENB is
The entity that communicates with UE and also referred to as base station, B node, access point etc..Each eNB can be special
Determine geographic area and communication overlay is provided.In 3 gpp, term " cellular cell " depends on using this term
Context can refer to the area of coverage of eNB and/or service the eNB subsystem of this area of coverage.
ENB can provide to macro cells, pico cells, femtocell community and/or other
The communication overlay of type cell community.Macro cells can cover relatively large geographic area (such as, half
Footpath is the region of thousands of meters), and can allow to be accessed by the UE with service subscription without restrictions.Slightly
Cellular cell can cover relatively small geographic area and can allow without restrictions by having service subscription
UE accesses.Femtocell community can cover relatively small geographic area (such as, house) and can permit
Permitted Constrained ground by with this femtocell community related UE (such as, closed subscriber group (CSG)
In UE) access.The eNB of macro cells is referred to alternatively as grand eNB.The eNB of pico cells
It is referred to alternatively as slight eNB.The eNB of femtocell community is referred to alternatively as femto eNB or domestic eNB
(HeNB).In example shown in FIG, eNB 110a could be for macro cells 102a
Grand eNB, eNB 110b could be for the slight eNB of pico cells 102b, and eNB 110c
Could be for femto eNB of femtocell community 102c.One eNB can support one or more (example
As, three) cellular cell.Term " eNB ", " base station " and " cellular cell " can be used interchangeably herein
Use.
Wireless network 100 may also include relay station.Relay station is to receive from upstream station (such as, eNB
Or UE) data transmission and downstream station (such as, UE or eNB) send the reality of the transmission of these data
Body.Relay station can also be can be for the UE of other UE relay transmission.In example shown in FIG,
Relay station 110d can communicate with grand eNB 110a and UE 120d so that eNB 110a and UE 120d it
Between communicate.Relay station also referred to as relays eNB, relay base station, relaying etc..
Wireless network 100 can be include different types of eNB (such as, grand eNB, slight eNB,
Femto eNB, relaying eNB etc.) heterogeneous network.These different types of eNB can have different sending out
Penetrate power level, distinct coverage region, and the interference in wireless network 100 is produced Different Effects.Such as,
Grand eNB can have a high emission power level (such as, 5 to 40 watts), and eNB, femto eNB slightly
Relatively low transmitted power level (such as, 0.1 to 2 watts) can be had with relaying eNB.
Network controller 130 can coupled to one group of eNB and can provide the coordination to these eNB and control.
Network controller 130 can communicate with each eNB via backhaul.These eNB can also be such as via wireless
Or wire-line back haul communicates directly or indirectly to one another.
As will be described in more detail below in, according to some aspect, eNB can perform to disturb between cellular cell
Coordinate (ICIC).ICIC can relate to consult to reach between all eNB resource coordination/division, thus to
It is positioned at the eNB Resources allocation near strong jamming eNB.Interference eNB can avoid being distributed/shielded money
Transmitting on source, possible CRS makes an exception.In the case of there is interference eNB, UE can be subject to subsequently
Communicate with eNB in the resource of protection, and would not observe that interference (the possible CRS of self-interference eNB
Exception).
UE 120 dispersibles throughout wireless network 100, and each UE can be in fixed or movement.
UE can also refer to terminal, movement station, subscri er unit, stand.UE can be cell phone, individual digital
Assistant (PDA), radio modem, Wireless Telecom Equipment, portable equipment, laptop computer,
Wireless phone, WLL (WLL) are stood, smart phone, net book, smartbook etc..
Fig. 2 shows it can is the base station/eNB 110 of one of one of all base station/eNB in Fig. 1 and all UE
The block diagram of the design with UE 120.Base station 110 may be provided with T antenna 234a to 234t, and
UE 120 may be provided with R antenna 252a to 252r, wherein it is said that in general, T >=1 and R >=1.
At base station 110, launching processor 220 can receive to one or more UE's from data source 212
Data, select one or more modulation for this UE and coding based on the CQI received from each UE
Scheme (MCS), (all) the MCS process being based upon each UE selection (such as, encode and adjust
System) to the data of this UE, and it is supplied to the data symbols of all UE.Launch processor 220 also can locate
Reason system information (such as, for SRPI etc.) and control information (such as, CQI request, permission, on
Layer signaling etc.), and overhead symbol is provided and controls code element.Processor 220 also can generate reference signal (example
As, CRS) and the reference symbols sn of synchronizing signal (such as, PSS and SSS).Launch (TX) multi input
Multi output (MIMO) processor 230 can be under applicable circumstances to data symbols, control code element, expense
Code element and/or reference symbols sn perform spatial manipulation (such as, precoding), and can be by T output code
Flow filament is supplied to T manipulator (MOD) 232a to 232t.Each manipulator 232 can process each
Output code flow filament (such as, for OFDM etc.) with obtain output sample streams.Each manipulator 232
Can process further (such as, conversion to simulating, amplify, filter and up-conversion) this output sample streams with
Obtain down link signal.From manipulator 232a to 232t T down link signal can respectively via
T antenna 234a to 234t is launched.
At UE 120, antenna 252a to 252r can receive under base station 110 and/or other base stations
Downlink signal and can respectively to demodulator (DEMOD) 254a to 254r provide receive signal.Each
Demodulator 254 can nurse one's health (such as, filter, amplify, down coversion and digitized), and it receives signal to obtain
Obtain input sample.Each demodulator 254 can process input sample (such as, for OFDM etc.) further
Code element is received to obtain.MIMO detector 256 can obtain from all R demodulator 254a to 254r
Receive code element, under applicable circumstances these are received code element and perform MIMO detection, and provide inspection
Go out code element.Receive processor 258 to process (such as, demodulation and decoding) these detect code element, will be through
The data to UE 120 of decoding are supplied to data trap 260, and by decoded control information and system
Information is supplied to controller/processor 280.Channel processor 284 can determine that RSRP, RSSI, RSRQ,
CQI etc., as described below.
On uplink, at UE 120, launching processor 264 can receive and process from data source
The data of 262 and from controller/processor 280 control information (such as, for include RSRP, RSSI,
The report of RSRQ, CQI etc.).Processor 264 also can generate the reference code of one or more reference signal
Unit.The code element carrying out spontaneous emission processor 264 can be pre-by TX MIMO processor 266 under applicable circumstances
Coding, is processed (such as, for SC-FDM, OFDM etc.) by manipulator 254a to 254r further,
And launch to base station 110.At base station 110, from the up-link of UE 120 and other UE
Signal can be received by antenna 234, demodulator 232 process, detected by MIMO under applicable circumstances
Device 236 detects, and is processed further to obtain decoded being sent by UE 120 by receiving processor 238
Data and control information.Processor 238 decoded data can be supplied to data trap 239 and will through solve
The control information of code is supplied to controller/processor 240.
Controller/processor 240 and 280 can distinguish the operation at direct base station 110 and UE 120.Place
Other processors and module at reason device 240 and/or base station 110 can perform or guide use as described herein
Carry out various Stochastic accessing code in configuration UE and identify one or more attribute during this type of code
Such as, processor at UE 120 280 and/other processors and module can perform or guide herein in operation
The operation of the various Stochastic accessing codes described.Memorizer 242 and 282 can store respectively for base station 110 He
The data of UE 120 and program code.Scheduler 244 schedulable UE carries out downlink and/or up
Data transmission on link.
Fig. 3 illustrates the exemplary frame structure 300 in LTE for FDD.For downlink and uplink
In road, the transmission timeline of each is divided in units of radio frame.Each radio frame can have
Make a reservation for last (such as 10 milliseconds (ms)), and be divided into 10 sons with index 0 to 9
Frame.Each subframe can include two time slots.The most each radio frame can include having index 0 to 19
20 time slots.Each time slot can include L code-element period, such as, for normal cyclic prefix (such as Fig. 2
Shown in) it is 7 code-element periods, or be 6 code-element periods for extended cyclic prefix.Each subframe
In 2L code-element period can be assigned index 0 to 2L-1.
In LTE, eNB can be on the uplink in each cellular cell supported for this eNB
The center 1.08MHz of system bandwidth transmits master sync signal (PSS) and secondary synchronizing signal (SSS).
PSS and SSS can be respectively at code in having the subframe 0 and 5 of each radio frame of normal cyclic prefix
Unit's cycle 6 and 5 transmits, as shown in Figure 3.PSS and SSS can be searched for for cellular cell by UE
And acquisition.ENB can transmit because of honeybee across the system bandwidth of each cellular cell supported for this eNB
Nest community and different reference signal (CRS).CRS can transmit in some code-element period of each subframe,
And can be used for performing channel estimation, channel quality measurement and/or other functions by UE.ENB also can be
In the time slot 1 of some radio frame, code-element period 0 to 3 transmits Physical Broadcast Channel (PBCH).
Some system informations of PBCH portability.ENB can transmit such as at physical down link altogether in some subframe
Enjoy the other system information of system information block (SIB) on channel (PDSCH) etc.ENB can be at son
In front B the code-element period of frame physical downlink control channel (PDCCH) upper transmit control information/
Data, wherein B can be for each sub-frame configuration.ENB can be in remaining code element week of each subframe
Interim transmission traffic data and/or other data on PDSCH.
Fig. 4 illustrates two illustrative sub-frame format 4s 10 for downlink with normal cyclic prefix
With 420.Available running time-frequency resource for downlink is divided into Resource Block.Each Resource Block can cover
12 subcarriers in one time slot and several resource element can be included.Each resource element can cover one
A subcarrier in individual code-element period, and can be used for sending a modulated symbol, this modulated symbol can
To be real number value or complex values.
Sub-frame formats 410 is available for being equipped with the eNB of two antennas and uses.CRS can code-element period 0,4,
Launch from antenna 0 and 1 in 7 and 11.Reference signal is the signal of transmitter and receiver known a priori, and
And it is also known as pilot tone.CRS is a distinctive reference signal in cellular cell, e.g. based on cellular cell
Identity (ID) and generate.In the diagram, for having labelling RaGiven resource element, can be at this
Launch modulated symbol from antenna a on resource element, and can not send out from other antennas on this resource element
Penetrate any modulated symbol.Sub-frame formats 420 is available for being equipped with the eNB of four antennas and uses.CRS can be
Code-element period 0,4,7 and 11 is launched and from antenna 2 code-element period 1 and 8 from antenna 0 and 1
Launch with 3.For both sub-frame formats 410 and 420, CRS can transmit on evenly spaced subcarrier,
These subcarriers can determine based on cellular cell ID.Depend on the cellular cell ID of different eNB,
These eNB can transmit their CRS on identical or different subcarrier.For sub-frame formats 410 and 420
Both, the resource element not being used for CRS can be used for transmitting data (such as, traffic data, control
Data and/or other data).
PSS, SSS, CRS and PBCH in LTE is at retrievable entitled " the Evolved Universal of the public
Terrestrial Radio Access(E-UTRA)；Physical Channels and Modulation is (evolved logical
(E-UTRA) is accessed with terrestrial radio；Physical channel and modulation) " 3GPP TS 36.211 in make
Describe.
For the FDD in LTE, pilotaxitic texture can be used for each in downlink and up-link.
Such as, definable has the index 0 Q stock intertexture to Q-1, and wherein Q can be equal to 4,6,8,10
Or other certain values.Per share intertexture can include the subframe being spaced Q frame.Specifically, intertexture q can be wrapped
Enclosed tool frame q, q+Q, q+2Q etc., wherein q ∈ 0 ..., Q-1}.
Wireless network can support the mixed automatic retransfer transmitted for the data on downlink and up-link
(HARQ).For HARQ, transmitter (such as, eNB) can send one or more biographies of packet
It is defeated until this packet is correctly decoded or suffers from other certain end conditions by receiver (such as, UE).
For synchronous HARQ, all transmission of this packet can send in the subframe that sub-thread interweaves.For asynchronous
HARQ, each transmission of this packet can send in any subframe.
UE can be located in the covering of multiple eNB.One of these eNB optional service this UE.Service
ENB can come based on various criterions (such as, receive signal intensity, receive signal quality, path loss etc.)
Select.Receive signal quality and can be received quality (RSRQ) by signal to interference and noise ratio (SINR) or reference signal
Or other certain quantify.UE may operate in surging interference scenario, in surging interference scenario
UE can be observed the severe jamming from one or more interference eNB.
Fig. 5 shows exemplary surging interference scenario.In example shown in Figure 5, UE T can be with clothes
Business eNB Y communicates and the improve oneself/surging severe jamming that disturb eNB Z be can be observed.
Surging interference scenario is likely to be due to affined association and occurs.Such as, in Figure 5, eNB Y can
Being grand eNB, and eNB Z can be femto eNB.UE T may near femto eNB Z and
ENB Z may be had and the highest receive power.But, UE T is likely to be due to affined association and can not connect
Enter femto eNB Z and may be subsequently attached to that there is the relatively low grand eNB Y receiving power.UE T can
Can observe the most on the uplink from femto eNB Z severe jamming and also may be up
On link, femto eNB Z is caused severe jamming.
Surging interference scenario is possibly also owing to range extends (range extension) and occurs, in this feelings
Jing Zhong, UE and all eNB detected by this UE have relatively low pathloss and likely has relatively
The eNB of low SINR is connected.Such as, in Figure 5, eNB Y can be slight eNB, and disturbs
ENB Z can be grand eNB.UE T may be bordering near grand eNB Z near slight eNB Y, and can
Slight eNB Y can there be is relatively low pathloss.But, owing to slight eNB Y sends out compared with grand eNB Z
Penetrating power level relatively low, therefore UE T receives the receipts of the possible comparison grand eNB Z of power to slight eNB Y
Low to power.But, owing to path loss is relatively low, it may be desirable to UE T is connected to slight eNB Y.Just
For the given data rate of UE T, the interference that wireless network is caused by this measure is less.Look back Fig. 1, for even
Be connected to the UE 120b of slight eNB 110b, grand eNB 110a can avoid being distributed/shielded resource on
Transmit, may interfere with CRS transmission exception.Therefore, based on the parameter relevant with interference, UE 120b
Can determine that being carried out interference cancellation still disturbs the perforation in CRS transmission
It is said that in general, UE can be located in the covering of any number eNB.One eNB can be selected to
Service this UE, and remaining eNB can be interference eNB.Therefore UE can have any number interference eNB.
For the sake of clarity, major part describe suppose shown in Fig. 5 there is a service eNB Y and one do
Disturb the sight of eNB Z.
Communication in surging interference scenario can be supported by performing inter-cell interference coordination (ICIC).
According to some aspect of ICIC, resource coordination/division can be performed, to allocate resources to be positioned at strong jamming eNB
Neighbouring eNB.Interference eNB can avoid being distributed/shielded resource on transmit, possible CRS
Exception.In the case of there is interference eNB, UE can communicate with eNB subsequently in shielded resource,
And would not observe that the interference (possible CRS exception) of self-interference eNB.
It is said that in general, can divide time and/or frequency resource allocation to eNB via resource.According to some
Aspect, system bandwidth is divided into several subband, and one or more subband can be assigned to an eNB.
In another kind designs, one group of subframe can be assigned to an eNB.In another designs, one group of Resource Block
An eNB can be assigned to.For clarity sake, major part describes supposition time division multiplex (TDM) below
Resource divides design, and the most one or more strands of intertextures can be assigned to an eNB.The subframe of the intertexture distributed
That reduce or not from strong jamming eNB interference be can be observed.
Fig. 6 shows for supporting what the TDM resource of the communication in the surging interference scenario in Fig. 5 divided
Example.In example shown in figure 6, such as can be via quiet with half by the negotiation of backhaul between eNB
State or static mode to eNB Y distribution intertexture 0 and distribute intertexture 7 to eNB Z.ENB Y can hand over
Knit and the subframe of 0 transmits data and can avoid transmitting data in the subframe of intertexture 7.On the contrary, eNB Z
Data can be transmitted in the subframe of intertexture 7 and can avoid transmitting data in the subframe of intertexture 0.Remaining is handed over
Knit 1 to 6 subframe can adaptively/be dynamically assigned to eNB Y and/or eNB Z.
Table 1 lists the different types of subframe according to a kind of design.For the angle of eNB Y, point
The intertexture of dispensing eNB Y can include being used by eNB Y and not having or almost without carrying out self-interference eNB
" protected " subframe (U subframe) of interference.Distributing to that the intertexture of another eNB Z can include can not be by eNB
Y is for " forbidding " subframe (N subframe) of data transmission.The intertexture being not yet assigned to any eNB can include energy
" sharing " subframe (C subframe) used by different eNB.The subframe of self-adjusted block indicates " A " prefix also
And can be protected subframe (AU subframe) or forbid subframe (AN subframe) or shared subframe (AC
Subframe).These different types of subframes also can be quoted from by other titles.Such as, protected subframe can quilt
It is referred to as retaining subframe, distributes subframe etc..
Table 1 subframe type
According to some aspect, eNB can transmit static resource division information (SRPI) to its UE.According to certain
A little aspects, SRPI can include Q the field interweaved for Q stock.Field for per share intertexture can be set
For " U " to indicate this intertexture be assigned to this eNB and include U subframe, or it is set as " N " to indicate this
Interweave and be assigned to another eNB and include N subframe, or be set as " X " to indicate this intertexture by adaptively
Distribute to any eNB and include X subframe.UE can receive from the SRPI of eNB and based on this SRPI
Mark is used for U subframe and the N subframe of this eNB.For SRPI is labeled as the per share intertexture of " X ", UE
May be unaware that the X subframe in this intertexture will be for AU subframe or AN subframe or AC subframe.
UE may only know that, via SRPI, the semi-static part that resource divides, and eNB may know that what resource divided
Semi-static part and self adaptation part.In example shown in figure 6, the SRPI of eNB Y can wrap
Include " U " for intertexture 0, " N " for intertexture 7 and " X " for remaining per share intertexture.eNB Z
SRPI can include for interweave 7 " U ", for interweave 0 " N " and for remaining per share intertexture
" X ".
Based on the CRS from service eNB, UE can estimate that service eNB's receives signal quality.UE
Can based on receive signal quality determine CQI and can by this CQI give service eNB.Service eNB
This CQI can be used to carry out link circuit self-adapting to select modulation and the coding of the data transmission for going to this UE
Scheme (MCS).Different types of subframe can have different interference volumes and therefore can have very different
CQI.Specifically, protected subframe (such as, U and AU subframe) can be characterized by preferable CQI,
Because surging interference eNB does not transmits in these subframes.Conversely, for there being one or more advantage
Other subframes (such as, N, AN and AC subframe) that interference eNB can transmit wherein, CQI may
Very different.For the angle of CQI, AU subframe can be equivalent to U subframe (both are all shielded),
And AN subframe can be equivalent to N subframe (both are all prohibited from).AC subframe can be by diverse CQI
Characterize.In order to reach good link circuit self-adapting performance, service eNB for wherein this eNB to UE
The each subframe transmitting traffic data should have relatively accurate CQI.
Dynamically cutting between common reference signal interference cancellation and resource element perforation in channel heterogeneous network altogether
Change
As it has been described above, the communication in surging interference scenario can be by performing inter-cell interference coordination (ICIC)
Support.According to some aspect of ICIC, resource coordination/division can be performed, to allocate resources to be positioned at
Serving Node B near strong jamming B node.Interference B node can avoid being distributed/locked resource on
Carrying out transmitting (such as, divide via TDM as shown in Figure 6), possible CRS makes an exception.Exist
Interference B node in the case of, UE subsequently can in shielded resource with serving Node B communication, and
Would not observe that the interference (possible CRS exception) of self-interference B node.
As mentioned above, even if in the case of TDM divides, interference B node is also likely to be one and direct transfers
Send CRS to maintain backward compatibility (such as, transmitting in most of blank subframe).Such as, although providing
Source can be assigned to serving Node B, but interference B node can use the resource distributing to serving Node B
Transmit CRS.As a result, the CRS transmission carrying out self-interference B node may result in obvious performance degradation.
Therefore, UE may need the interference solving to transmit from the CRS of strong interferers.Such as, interference is worked as
(that is, conflict RS), CRS when the CRS frequency modulation in source may be conflicted with the CRS frequency modulation of non-serving cells
Interference cancellation (IC) is probably appropriate, is similarly to the description in US publication 2011/0143672,
This U.S. Publication is included in this by quoting in full.Interference cancellation can be by covering that elimination strong interferers causes
Cap bore hole thus strengthens the decoding of UE and measurement performance and experiences to strengthen UE.
Perform CRS IC to generally comprise from serving Node B and the biography of one or more non-serving B node
The CRS transmission of defeated this one or more non-serving B node of middle deduction.Such as, UE can receive from many
The signal of individual access point.These access points can be by the signal intensity sequence successively decreased.Use interference cancellation technology,
UE can estimate from the channel with the cellular cell receiving the most by force signal, and reconstruct has and receives the most by force signal
The common reference signal of cellular cell, and have to eliminate from receiving the signal deducting this reconstruct signal
Receive by force the interference that the cellular cell of signal causes.This process can be repeated to eliminate from other to receiving signal
The interference of cellular cell.
As another example, when the CRS frequency modulation of interference source may be with the control of non-serving cells/data frequency
When adjusting conflict (that is, non conflicting RS), or CRS IC or be disturbed wearing of resource element (RE)
Hole is probably appropriate.Perforation can relate to the log-likelihood generated by the RE under strong jamming before decoding
Than (LLR) zero setting.For some embodiments, UE can bore a hole at CRS IC and RE based on some parameter
Between dynamically switch, as will be described herein.
Fig. 7 explanation according to the disclosure some in terms of the example with serving Node B 710 and UE 720
System 700, it dynamically can switch between CRS IC and RE bores a hole based on the parameter relevant with interference.
As commentary, serving Node B 710 can include the message generating module 714 for generating data transmission.
Data transmission can be transmitted to UE 720 via transmitter module 712.
UE 720 can receive data transmission via receiver module 726.At UE 720 from serving Node B
While 710 receive data transmission, UE 720 also can receive from one or more non-serving B node
The transmission (such as, non conflicting RS) being likely to result in interference.UE 720 can measure and disturb relevant ginseng
Number, and records parameter based on this, and UE 720 can determine via switching at runtime module 724 and is carried out CRS IC
Or RE perforation, as by described further herein.UE 720 can transmit via transmitter module 722
Feed back, and serving Node B 710 can receive this feedback via receiver module 716.
Fig. 8 explain orally according to the disclosure some in terms of for based on the parameter relevant with interference at CRS IC
And the exemplary operations 800 dynamically switched between RE perforation.Operation 800 can be performed by such as UE.
802, UE can identify transmitting and one or more non-serving B node at serving Node B
Having noisy subframe between transmission, wherein those subframes can be one or more with this based on this serving Node B
Collaborative resource between individual non-serving B node divides and identifies.This one or more non-serving B saves
The transmission of point typically can include disturbing CRS to transmit (such as, non conflicting RS) as above.Such as,
Look back the sub-frame formats 410 of Fig. 4, this one or more non-serving B node may code-element period 0,4,
Transmitting CRS transmission on the subcarrier of 7 or 11, the latter's interference is transmitted from the data of serving Node B.
Mark strong interferers generally comprise measurement in this one or more non-serving B node each
Receive signal intensity, and determine whether at least one non-serving B node record receive signal
Intensity is more than threshold value.This threshold value can be absolute measure, wherein will be for this one or more non-serving B
In node each receive signal intensity compared with absolute value, or this threshold value can be tolerance relatively,
Wherein can determine that in this one or more non-serving B node each whether receive signal intensity
More than receiving signal intensity for serving Node B.
For some embodiments, measure for the receipts of each in this one or more non-serving B node
Can include from adjacent cellular cell search (such as, using PSS/SSS/PBCH) receiving intensity to signal intensity
Tolerance.For some embodiments, measure for the receipts of each in this one or more non-serving B node
Can include estimating from each receive in this one or more non-serving B node to signal intensity
CRS power.
804, UE can measure the parameter relevant with this interference.This parameter generally comprises following at least one:
The quality metrics of CRS IC, receive signal intensity, instruction with strong for each interference source as above
The number of the amount of the afoul RE of CRS of interference source and transport block size (TBS).
806, recording parameter based on this, UE can determine that and is carried out RE perforation still CRS IC (dynamically
Switching).Such as, if the residual interference after CRS IC is by less, UE can determine that CRS IC is favourable.
If the example that the residual interference after IC is less includes the strong jamming not that CRS IC mass is preferable or is eliminated
Strong.As another example, if the number of the RE under strong jamming is relatively big thus loss of boring a hole may be relatively big,
Then UE can determine that CRS IC is favourable.In other words, if the number of UE RE under being in strong jamming
Determining time bigger that RE to be performed bores a hole, the most little RE may remain decoding, and this is not likely to be institute
Desired.
For other embodiments, if the number of (in code block segmentation) code block is relatively big, then UE can determine that
CRS IC is favourable.For PDSCH transmission, multiple code blocks can be used for this transmission.Due to each code
Block can encode dividually and decode, if a code block is not decoded (such as, due to from non-serving B node
Interference), then PDSCH transmission may failure.TBS can determine that the number of code block, and assigned RB
Number can determine that how those code blocks spread in OFDM symbol.Each code block can be across the most a small amount of
OFDM symbol, and overall decoding performance can be by across those RS code elements (such as, in normal CP
Code element 0,4,7 or 11) the worst code block the most seriously bored a hole specify.
UE determine favourable example of boring a hole include that if the residual interference after IC is relatively big, RE under strong jamming
Less or (in code block segmentation) code block the number of number is less.Therefore, UE can be based on CRS IC
One or more in the number of the RE under quality, jamming power level, strong jamming or TBS is at CRS
Dynamic decision is made between IC and perforation.
About perforation, for each strong interferers, UE can be from the cellular cell detected of this interference source
ID knows the CRS tone locations of this interference source.Therefore, in decoding (from serving Node B) control
Before/data channel, the RE under strong jamming can be bored a hole by UE.For some embodiments, by the RE of subframe
Perforation can include log-likelihood ratio (LLR) zero setting generated by the RE disturbed in the middle of those subframes
(that is, hard hole).For some embodiments, the RE of subframe is bored a hole and can include working as from those subframes
In the LLR that generates of the RE that disturbed be multiplied by the factor, wherein this factor can more than or equal to 0 and less than or
Equal to 1 (that is, soft perforation).In other words, UE can perform soft perforation rather than perform firmly to wear some RE
Hole, so that UE still can utilize the RE through soft perforation to be decoded.
For some embodiments, UE can be each RE (subframe or any time/unit frequently) make this
Dynamic decision.Such as, UE can determine that the RE to having bigger residual interference bores a hole, and to having
The RE of less residual interference carries out CRS IC.As another example, UE can often disturb seedbed to make this and move
State decision-making.Such as, UE can determine based on the parameter relevant with the interference from each non-serving B node
Perform CRS IC for the first non-serving B node and perform RE perforation for the second non-serving B node.
As another example, UE can often organize interference seedbed and make this dynamic decision, and one of which interference source shares phase
Same CRS tone locations.
It will be understood by those skilled in the art that information and signal can use in various different technologies and skill any
One represents.Such as, run through be described above may be addressed all the time data, instruct, order, information,
Signal, position (bit), code element and chip can by voltage, electric current, electromagnetic wave, magnetic field or magnetic particle,
Light field or light particle or its any combination represent.
Those skilled in the art will further appreciate that, in conjunction with described various illustrative logics disclosed herein
Frame, module, circuit and algorithm steps can be implemented as electronic hardware, computer software or both groups
Close.For clearly explaining orally this interchangeability of hardware and software, above with its functional form one
As change describe various illustrative components, frame, module, circuit and step.This type of is functional by reality
The design constraint specifically applying and being added to total system is now depended on for hardware or software.Technical staff can
Realize described functional by different way for every kind of application-specific, but this type of realize decision-making should be by
It is read as causing a departure from the scope of the present disclosure.
Various illustrative boxes, module and circuit in conjunction with description disclosed herein can be with being designed to use
In performing the general processor of function described herein, digital signal processor (DSP), special integrated
Circuit (ASIC), field programmable gate array (FPGA) or other PLDs, discrete
Door or transistor logic, discrete nextport hardware component NextPort or its any combination realize or perform.General processor
Can be microprocessor, but in alternative, processor can be the processor of any routine, controller,
Microcontroller or state machine.Processor is also implemented as the combination of calculating equipment, such as, DSP with
One or more microprocessor that the combination of microprocessor, multi-microprocessor cooperate with DSP core,
Or any other this type of configuration.
Can be embodied directly in hardware, in perform by processor in conjunction with the method for description disclosed herein or the step of algorithm
Software module in or in combination of the two implement.Software module can reside in RAM memory,
Flash memory, ROM memory, eprom memory, eeprom memory, depositor, hard disk, can
In the storage medium of any other form moving dish, CD-ROM or known in the art.Exemplary deposit
Storage media is coupled to processor so that this processor can be from/to this storage medium reading writing information.In alternative
In, storage medium can be integrated into processor.Processor and storage medium can reside in ASIC.ASIC
Can reside in user terminal.In alternative, processor and storage medium can be resident as discrete assembly
In the user terminal.
In one or more exemplary design, described function can hardware, software, firmware,
Or its any combination realizes.If realized in software, the most all functions can be as one or more instruction
Code storage on a computer-readable medium or mat its transmit.Computer-readable medium includes computer
Storage medium and communication media, it include facilitating computer program from a ground any to another ground transfer
Medium.Storage medium can be any usable medium that can be accessed by a general purpose or special purpose computer.As example
And non-limiting, this type of computer-readable medium can include RAM, ROM, EEPROM, CD-ROM
Or other optical disc storage, disk storage or other magnetic storage apparatus, maybe can be used to carry or store instruction or
The expectation program code means of data structure form and can be by universal or special computer or universal or special
Any other medium that processor accesses.It addition, any connection is also properly termed a computer-readable medium.
Such as, if software be use coaxial cable, fiber optic cables, twisted-pair feeder, numeral subscriber's line (DSL),
Or the wireless technology of the most infrared, radio and microwave etc from web site, server or other
Remote source transmits, then this coaxial cable, fiber optic cables, twisted-pair feeder, DSL or the most infrared, nothing
The wireless technology of line electricity and microwave etc is just included among the definition of medium.As used herein
, dish (disk) and dish (disc) include compact disc (CD), laser dish, laser disc, digital versatile dish
(DVD), floppy disk and blu-ray disc, its mid-game (disk) often reproduces data in the way of magnetic, and dish (disc)
Data are reproduced optically with laser.Combination of the above also should be included in the scope of computer-readable medium
In.
Thering is provided of this disclosure being previously described is for making any person skilled in the art all can make or make
Use the disclosure.Various amendment of this disclosure the most all will be apparent from, and
The generic principles defined herein can be applied to other variants without departing from the spirit of the disclosure or model
Enclose.Thus, the disclosure is not intended to be limited to example described herein and design, but should be awarded
Give the widest scope consistent with principle disclosed herein and novel features.
Claims (36)
1. a method for wireless communications, including:
Identify and have between transmission and the transmission of one or more non-serving B node of serving Node B
Noisy subframe, wherein said subframe is based on described serving Node B and one or more non-clothes
Collaborative resource division between business B node identifies；
Measure the parameter relevant with described interference；And
Based on the parameter measured, determine that the resource element to described subframe (RE) perforation is also carried out
Common reference signal interference cancellation (CRS IC) reduces described interference, wherein wears the RE of described subframe
Hole include being multiplied by natural logrithm ratio (LLR) generated by the RE of described interference because of
Son.
2. the method for claim 1, it is characterised in that described parameter includes at least one of:
The quality metrics of CRS IC, for each described non-serving B node receive signal intensity, instruction suffers
The number of the amount of the RE of described interference and transport block size (TBS).
3. the method for claim 1, it is characterised in that determine it is by the described RE of described subframe
It is every subframe, every RE of described subframe, often another time or frequency list that perforation is also carried out described CRS IC
Unit or every non-serving B node are made.
4. the method for claim 1, it is characterised in that one or more non-serving B
The transmission of node includes that CRS transmits.
5. method as claimed in claim 4, it is characterised in that perform CRS IC and include from described service
The transmission of B node and one or more non-serving B node is deducted one or more non-clothes
At least one CRS transmission in the described CRS transmission of business B node.
6. the method for claim 1, it is characterised in that mark has the described subframe of described interference
Including:
Measure in one or more non-serving B node each receive signal intensity；
And
Determine whether at least one in described non-serving B node record receive signal intensity
More than threshold value.
7. method as claimed in claim 6, it is characterised in that measure for one or more non-
In serving Node B, the signal intensity that receives of each includes from adjacent cellular cell search receiving intensity tolerance.
8. method as claimed in claim 6, it is characterised in that measure for one or more non-
In serving Node B, the signal intensity that receives of each includes estimating from one or more non-serving B
In node, each receives CRS power.
9. the method for claim 1, it is characterised in that the described factor is more than or equal to 0 and is less than
Or equal to 1.
10. for an equipment for radio communication, including:
For mark serving Node B transmission and the transmission of one or more non-serving B node it
Between have the device of noisy subframe, wherein said subframe be based on described serving Node B and one or
Collaborative resource division between more non-serving B node identifies；
For measuring the device of the parameter relevant with described interference；And
For based on measure parameter, determine to described subframe resource element (RE) perforation or
Perform common reference signal interference cancellation (CRS IC) and reduce the device of described interference, wherein to described son
The RE perforation of frame includes the natural logrithm ratio that will generate by the RE of described interference
(LLR) it is multiplied by the factor.
11. equipment as claimed in claim 10, it is characterised in that described parameter include following at least
One of: the quality metrics of CRS IC, receiving signal intensity, refer to for each described non-serving B node
Show number and the transport block size (TBS) of the amount of the RE suffering described interference.
12. equipment as claimed in claim 10, it is characterised in that described in be used for determining to be by described
The described RE perforation of subframe be also carried out the device of described CRS IC be every subframe, every RE of described subframe,
Another time every or frequency cells or every non-serving B node are made.
13. equipment as claimed in claim 10, it is characterised in that one or more non-clothes
The transmission of business B node includes that CRS transmits.
14. equipment as claimed in claim 13, it is characterised in that for performing the device of CRS IC
Deduct including in the transmission from described serving Node B and one or more non-serving B node
The dress of at least one CRS transmission in the described CRS transmission of one or more non-serving B node
Put.
15. equipment as claimed in claim 10, it is characterised in that described have for mark described
The device of the described subframe of interference includes:
For measure in one or more non-serving B node each to receive signal strong
The device of degree；And
Be used to determine whether at least one in described non-serving B node record receive signal
Intensity is more than the device of threshold value.
16. equipment as claimed in claim 15, it is characterised in that described for measuring for described
In one or more non-serving B node, the device receiving signal intensity of each includes for from adjacent honeybee
The device of nest cell searching receiving intensity tolerance.
17. equipment as claimed in claim 15, it is characterised in that described for measuring for described
In one or more non-serving B node, the device receiving signal intensity of each includes for estimating to come
The device receiving CRS power of each in one or more non-serving B node.
18. equipment as claimed in claim 10, it is characterised in that the described factor is more than or equal to 0
And less than or equal to 1.
19. 1 kinds of device for wireless communications, including:
At least one processor, it is configured to:
Identify and have between transmission and the transmission of one or more non-serving B node of serving Node B
Noisy subframe, wherein said subframe is based on described serving Node B and one or more non-clothes
Collaborative resource division between business B node identifies；
Measure the parameter relevant with described interference；And
Based on the parameter measured, determine that the resource element to described subframe (RE) perforation is also carried out
Common reference signal interference cancellation (CRS IC) reduces described interference, wherein wears the RE of described subframe
Hole include being multiplied by natural logrithm ratio (LLR) generated by the RE of described interference because of
Son；And
It coupled to the memorizer of at least one processor described.
20. devices as claimed in claim 19, it is characterised in that described parameter include following at least
One of: the quality metrics of CRS IC, receiving signal intensity, refer to for each described non-serving B node
Show number and the transport block size (TBS) of the amount of the RE suffering described interference.
21. devices as claimed in claim 19, it is characterised in that at least one processor described is joined
It is set to determine and the described RE of described subframe is bored a hole that to be also carried out described CRS IC be every subframe, described
Every RE of subframe, often another time or frequency cells or every non-serving B node make.
22. devices as claimed in claim 19, it is characterised in that one or more non-clothes
The transmission of business B node includes that CRS transmits.
23. devices as claimed in claim 22, it is characterised in that at least one processor described is joined
It is set to perform CRS IC include from described serving Node B and one or more non-serving B node
Transmission is deducted at least one in the described CRS transmission of one or more non-serving B node
CRS transmits.
24. devices as claimed in claim 19, it is characterised in that at least one processor described is joined
It is set to identify and there is the described subframe of described interference includes:
Measure in one or more non-serving B node each receive signal intensity；
And
Determine whether at least one in described non-serving B node record receive signal intensity
More than threshold value.
25. devices as claimed in claim 24, it is characterised in that at least one processor described is joined
It is set to measure and includes for the signal intensity that receives of each in one or more non-serving B node
From adjacent cellular cell search receiving intensity tolerance.
26. devices as claimed in claim 24, it is characterised in that at least one processor described is joined
It is set to measure and includes for the signal intensity that receives of each in one or more non-serving B node
Estimate from one or more non-serving B node each receive CRS power.
27. devices as claimed in claim 19, it is characterised in that the described factor is more than or equal to 0
And less than or equal to 1.
28. 1 kinds of computer programs for radio communication, described computer program includes:
There is the non-volatile computer-readable medium of code, described code can be executed by processor with:
Identify and have between transmission and the transmission of one or more non-serving B node of serving Node B
Noisy subframe, wherein said subframe is based on described serving Node B and one or more non-clothes
Collaborative resource division between business B node identifies；
Measure the parameter relevant with described interference；And
Based on the parameter measured, determine that the resource element to described subframe (RE) perforation is also carried out
Common reference signal interference cancellation (CRS IC) reduces described interference, wherein wears the RE of described subframe
Hole include being multiplied by natural logrithm ratio (LLR) generated by the RE of described interference because of
Son.
29. computer programs as claimed in claim 28, it is characterised in that described parameter bag
Include at least one of: the quality metrics of CRS IC, receive letter for each described non-serving B node
Number intensity, instruction suffer number and the transport block size (TBS) of the amount of the RE of described interference.
30. computer programs as claimed in claim 28, it is characterised in that described for really
Surely be the code described RE of described subframe bored a hole and is also carried out described CRS IC be every subframe, described
Every RE of subframe, often another time or frequency cells or every non-serving B node make.
31. computer programs as claimed in claim 28, it is characterised in that one or
The transmission of more non-serving B node includes that CRS transmits.
32. computer programs as claimed in claim 31, it is characterised in that described in be used for holding
The code of row CRS IC includes for from described serving Node B and one or more non-serving B joint
The transmission of point is deducted at least in the described CRS transmission of one or more non-serving B node
The code of individual CRS transmission.
33. computer programs as claimed in claim 28, it is characterised in that described for marking
Know the code of described subframe with described interference and include the code for following action:
Measure in one or more non-serving B node each receive signal intensity；
And
Determine whether at least one in described non-serving B node record receive signal intensity
More than threshold value.
34. computer programs as claimed in claim 33, it is characterised in that described for surveying
Each code receiving signal intensity in one or more non-serving B node is included by metering pin
For the code from adjacent cellular cell search receiving intensity tolerance.
35. computer programs as claimed in claim 33, it is characterised in that described for surveying
Each code receiving signal intensity in one or more non-serving B node is included by metering pin
For estimating the generation receiving CRS power of each in one or more non-serving B node
Code.
36. computer programs as claimed in claim 28, it is characterised in that the described factor is big
In or equal to 0 and less than or equal to 1.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US39053310P | 2010-10-06 | 2010-10-06 | |
| US61/390,533 | 2010-10-06 | ||
| US13/251,990 | 2011-10-03 | ||
| US13/251,990 US8576742B2 (en) | 2010-10-06 | 2011-10-03 | Dynamic switching between common reference signal interference cancellation and resource element puncturing in a co-channel heterogeneous network |
| CN201180048092.5A CN103155503B (en) | 2010-10-06 | 2011-10-04 | Dynamic switching between common reference signal interference cancellation and resource element perforation in channel heterogeneous network altogether |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180048092.5A Division CN103155503B (en) | 2010-10-06 | 2011-10-04 | Dynamic switching between common reference signal interference cancellation and resource element perforation in channel heterogeneous network altogether |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105978834A true CN105978834A (en) | 2016-09-28 |
| CN105978834B CN105978834B (en) | 2020-11-03 |
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ID=44800280
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180048092.5A Expired - Fee Related CN103155503B (en) | 2010-10-06 | 2011-10-04 | Dynamic switching between common reference signal interference cancellation and resource element perforation in channel heterogeneous network altogether |
| CN201610274337.0A Expired - Fee Related CN105978834B (en) | 2010-10-06 | 2011-10-04 | Method, device and apparatus for wireless communication |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180048092.5A Expired - Fee Related CN103155503B (en) | 2010-10-06 | 2011-10-04 | Dynamic switching between common reference signal interference cancellation and resource element perforation in channel heterogeneous network altogether |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8576742B2 (en) |
| EP (1) | EP2625833B1 (en) |
| JP (1) | JP5731001B2 (en) |
| KR (2) | KR20150104645A (en) |
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| US8576742B2 (en) | 2013-11-05 |
| KR20150104645A (en) | 2015-09-15 |
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| US20120087261A1 (en) | 2012-04-12 |
| EP2625833B1 (en) | 2018-01-10 |
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